Process of manufacturing safety-razor blades



J. F. BARRY PROCESS OF MANUFACTURING SAFETY RAZOR BLADES Filed March 21, 1923 avwzwtqz 7am 2 501735 Patented Mar. 11,1924.

JAMES F. BARRY, OF DALLAS, TEXAS, ASSIGNOR TO RIVAL SAFETY RAZOR CORPORA- TION, A CORPORATION OF THE DISTRICT OF COLUMBIA.

PROCESS OF MANUFACTURING SAFETY-RAZOR BLADES.

Application filed March 21, 1923. Serial No.'626,549.

To all whom it may concern:

Be it known that I, JAMES F. BARRY, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Processes of Manufacturing Safetydtazor Blades, of which the following is a specification.

This invention relates to new and improved methods or processes of manufacturing safety razor blades, and more particularly to the process where a plurality of safety razor blades are manufactered from a strip or ribbon of steel.

An object of the invention is to provide a suit-able process whereby. a plurality of safety razor blades may be manufactured from a ribbon or stri of steel, and the same may be tempered wiile the blades are in strip form.

Another object of the invention is to provide a process of manufacturing a plurality of safety razor blades from a strip or ribbon of steel, and tempering, polishing, grinding, honing and stropping the same while they are still in strip form.

A further object of the invention is to provide a new and improved process for manufacturing safety razor blades from a strip or ribbon of steel, and after the same have been completed, to break the separate blades off from the strip by means of dies, stamp presses or by hand.

Other objects will appear as the description proceeds.

In the accompanying drawings which form a part of my application,

Figure 1 is a plan view of a strip or ribbon of steel from which the blades are manufactured;

Figure 2 is a plan view of the strip or ribbon of steel after the same has been punched,

and

Figure 3 is a plan view of the complete safety razor blade, after the same has been broken off from the strip.

Like characters of reference are used throughout the following specification and the accompanying drawings to designate corresponding parts. I

The main object of the invention is to provide a process of manufacturing safet razor blades from a strip or ribbon of stee whereby the several ste s of the process may be completed without t e use of any special machinery. In most of the machines used for the manufacture of safety razor blades, there is a complicated set of machinery required, and it is for the purpose of doing away with this expensive machinery, that I have invented my process for manufacturing safety razor blades in strip form.

A strip of steel 1, is first punched in one operation to form the central openings 2 and the end positioning seats or notches 3 in the several blades. The seats 3 are adapted to seat over suitable lugs at the ends of the razor to position the blades. It may be desired to also punch out the triangular shape portions 4, shown in dotted lines in the drawings and to leave the blades only connected where the pointed ears or lugs 5 meet, at the opposite sides of the end notches 3. The portions 4 may also be weakened by Y the unching operation, so that they may be easi y and readily removed without the use of any tool.

The blades in strip form are then tempered by being immersed in melted lead or other suitable metal, or in the desired man ner. After this step, the blades, still in strip form are polished on suitable bufi'ers.

Next, the strip of blades are ground and honed on suitable grinders, and then stropped on any type of stroppers desired, after which they are ready for the final step in the process.

The final step consists in the breaking off of the completed safety razor blades, by one or two operations, either by dies, stamp presses or by hand.

It will be apparent that in each step in my process, no special machinery will be required, and that the blades may be manufactured in large numbers at one time, they being formed in strip form, and that all of the blades will be uniform throughout in every detail, since they-are all formed from the same width strip or ribbon of steel.

Thus, I have provided and invented a new and improved process of manufacturing safety razor blades, which will be of great benefit to those who manufacture safety razor blades, as my process is highly efiicient, and the cost of manufacturing the blades will be the minimum amount.

Many minor changes in detail of manufacture may be resorted to without departure from the spirit of the invention.

Having thus described my invention what I claimas new and desire to secure by Letters Patent of the United States is:

1. The process of manufacturing safety razor blades comprising the running of a strip or ribbon of steel through a punch to form central openings and adjoining end p sitionlng seats or notches, tempering 111 a suitable bath, polishing on buffers, and finally sharpening on suitable honcs.

2. The process of manufacturing safety razor blades comprising the running of a strip or ribbon of steel through a punch to form central openings and adjoining end positioning seats and oppositely disposed weakened areas, tempering in a suitable bath, polishing on buffers, and finally sharpening on suitable hones.

3. The process of manufacturing safety razor blades comprising the running of a strip or ribbon of steel through a punch to form central openings and adjoining end positioning seats or notches and oppositely disposed weakened areas, tempering in asuitable bath, polishing on buffers, sharpening on suitable homes, and finally breaking off the completed blades from the strip.

4. The process of manufacturing safety razor blades comprising the running of a strip or ribbon of steel through a punch to form central openings and adjoining positioning seats or notches and oppositely disposed Wcdge-shapcd notches therein, tempering in a suitable bath, polishing on buffers, sharpening on suit-able hones, and finally breaking off the completed blades from the strip Without the use of any kind of tools.

In testimony whereof I aflix my signature.

JAMES F. BARRY. 

